Timing on 1990 350

Aug 07, 2008 1 Replies

I was told that when you set the timing on a 1990 chevy 350 w/ EFI you need to disconnect something under the dash, does anyone know anything about this?


on my 1992 there is brown wire on the passenger side of the firewall that has a connector that you disconnect to set the base timing to zero degrees.

----------- Elbert snipped-for-privacy@me.com

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